- TL;DR Summary
- history of standard gravity parameter measurements
does anyone have a good reference on the history of calculating the standard gravity parameters of solar system bodies? My guess is a rough estimate of Jupiter's SGP can be gained from observing the motion of its moons, in which case the first estimates could have been made soon after Newtonian theory had made SGPs pertinent to astronomy. Or maybe the estimates were already there in an rearrangement in the numbers gained from Galilean observations around 1610.